Control device and control method for stabilizing pressure of pneumatic branch pipe network

Abstract

The invention discloses a control device and a control method for stabilizing the pressure of a pneumatic branch pipe network. The control device consists of an air source, a separator, an air storage tank, a stop valve, a pressure sensor, a proportional throttling valve, other normal air use equipment, intermittent high-flow air use equipment and a programmable controller; each branch proportional throttling valve is respectively mounted in an inlet of the intermittent high-flow air use equipment of a conveying pipe network; each branch pressure sensor is respectively mounted in an inlet of each branch proportional throttling valve; and the pressure sensor and the proportional throttling valve are respectively connected to the programmable controller through leads. The control method comprises the following steps: when a measured pressure value of an air use branch is not in an allowed pressure range set by the branch, a corresponding control quantity gradually increased or decreased along a parabola is output to the proportional throttling valve; and the openness of a valve port of the proportional throttling valve is reversely adjusted to stabilize the pressure of the air use branch, so that the air supply quality of the whole pneumatic pipe network branch is improved.

Description

technical field [0001] The invention belongs to the field of pneumatic energy saving and control, and in particular relates to a control device and a control method for stabilizing the pressure of a pneumatic branch pipe network. Background technique [0002] In the pneumatic pipe network of enterprises such as aluminum alloy wheels, electrolytic aluminum, tires, etc., due to the regular maintenance of the production line or the technical requirements of the production line, intermittent large-flow air injection equipment is often used; each time these devices are turned on, the pressure on the pneumatic pipe network is often caused Large-scale fluctuations will affect the normal production of other production lines in severe cases. [0003] In order to ensure the normal operation of other production lines, enterprises usually adopt the method of increasing the pressure of the entire compressed air pipe network; while increasing the pressure of the compressed air pipe networ...

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Problems solved by technology

[0002] In the pneumatic pipe network of enterprises such as aluminum alloy wheels, electrolytic aluminum, tires, etc., due to the regular maintenance of the production line or the technical requirements of the production line, intermittent large-flow air injection equipment is often used; each time these devices are turned on, the pressure on the pneumatic pipe network is often caused Large-scale fluctuations, which will affect the normal production of other production lines in severe cases

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